Squid 3.5.x < 3.5.18 Multiple Vulnerabilities
medium Nessus Network Monitor Plugin ID 9776
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Synopsis
The remote proxy server is affected by multiple attack vectors.Description
Versions of Squid 3.5.x prior to 3.5.18 are affected by multiple vulnerabilities :- A flaw is triggered as input is not properly validated when handling HTTP request messages. This may allow a remote attacker to conduct a cache poisoning attack.
- A flaw is triggered as input is not properly sanitized when handling specially crafted host headers. This may allow a remote attacker to bypass same-origin protection mechanisms and cause the program to contact the wrong origin server. This may also poison downstream caches.
- Flaws in pointer handling and reference counting are triggered when handling specially crafted ESI response syntax. This may allow a remote server to cause a denial of service for Squid clients.
Solution
Either upgrade to Squid version 3.5.18 or later, or apply the vendor-supplied patch.See Also
Plugin Details
Severity: Medium
ID: 9776
Family: Web Servers
Published: 11/11/2016
Updated: 3/6/2019
Dependencies: 3389
Risk Information
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 4.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Temporal Vector: CVSS2#E:ND/RL:OF/RC:C
CVSS v3
Risk Factor: Medium
Base Score: 5.3
Temporal Score: 5.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Temporal Vector: CVSS:3.0/E:X/RL:O/RC:C
Vulnerability Information
CPE: cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*
Patch Publication Date: 5/6/2016
Vulnerability Publication Date: 5/6/2016
Reference Information
CVE: CVE-2016-4553, CVE-2016-4554, CVE-2016-4555, CVE-2016-4556